Furnace-grate.



No. 774,663. I PATENTED NOV. 8, 1904. F. GIRTANNER & S. L. SIMPSON.

FURNACE GRATB.

APPLICATION FILED DEC. 29, 1903.

2 SHEETS-SHEET 1;

H0 MODEL.

ihwenfom wifnmoeo W E M Z .m i a PATENTED NOV. 8, 1904. f. GIRTANNER &'s. L. SIMPSON.

FURNACE GRATE.

APPLICATION FILED 13360.29, 1.903.

2 SHEETS-SHEET 2.

N0 MODEL- K 0 u a n w, m m 9 y b FREDERICK GIRTANNER AND SOLOMON L. SIMPSON, OF NEW YORK, N. Y,

' UNITED "S'S 'TATES Patented November 8, 1904.

PATENT ()FFICE.

ASSIGNORS TO THE UNITED STATES MINING AND TRADING 00., OF

NEW YORK, N. Y.

FURNACE-GRATE.

SPECIFICATION forming part of Letters Patent No. 774,663, dated November 8, 1904.

Application filed December 29, 1903. Serial No. 187,018. (No model.)

To (M6 whom it may concern:

Be it known that we, FREDERICK GIRTAN- NER and SOLOMON L. SIMPSON, citizens of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful I mprovements in Furnace-Grates, of which the following is a specification.

The object of this invention is to devise novel means for removing the ashes, clinkers, and like matter that may accumulate at the inner or rear end of the grate or fire-box of steam-boiler and like furnaces, particularly where said furnaces are devoid of side doors or openings to admit of access being readily had to the inner Or rear portion of the fire.

The invention consists,primarily,of a gratesection at the inner or rear end of the fire-box downwardly and rearwardly inclined and mounted for pivotal movement to admit of the provision of an opening between the lower rear end of said grate-section and the subjacent wall of the fire-box through which the ashes, clinkers, and the like may readily escape.

The invention also combines with the pivoted grate-section fuel-bars mounted for rocking movement, whereby the rear portion of the fire may be cleared of all ashes and foreign matter resulting from combustion.

The invention also consists of the novel structural 'features'and details of construction, which hereinafter will be more particularly set forth, illustrated, and finally claimed.

In the drawings hereto attached and forming a part of the specification, Figure l is a side View of a grate-section constructed in accordance with and embodying the invention. Fig. 2 is a longitudinal section of a furnace,on the liney y of Fig. 3 looking in the direction of the arrows, the grate-section being shown in operative position. Fig. 3 is a sectional view of the grate, on the line X Xof Fig. 1 looking in the direction of the arrows, the side bars being in full and the upper forward portion of the grate and the cross-bar being in dotted lines. Fig. 4 is a detail perspective side piece of the pivoted grate-section.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The grate proper is indicated at l and may be of the endless variety or other type commonly employed in furnaces supplied with fuel by means of a mechanical stoker. The hopper for the fuel is indicated at 2. The pivoted grate-section is shown at 8 and is rearwardly and downwardly inclined and makes a close connection at its upper end with the rear end of the grate 1.

The section 3 comprises, essentially, two frames, one of which is fixed and composed of the side pieces 4 and upper transverse connecting-bar 5. The side pieces 4 constitute supports or rests for the moving parts and are secured to the side walls of the furnace in any substantial manner. The other frame is composed of side bars 9, arranged adjacent to the inner sides of the rests 4: and pivotally supported thereby at 6, so as to tilt when it is required to clear the grate of ashes and other accumulation. Notches 10 are formed along'the upper edges of the bars 9 to receive the journals 11 of the fuel-bars 12, and these notches are closed at their open sides by plates 13, bolted or otherwise secured to the upper longitudinal edges of the bars 9. Hooks l i-are formed at the upper ends of the bars 9 to engage over the rod 5, so as to hold said bars in proper position. The fuel-bars 12 have pendent lugs 15, which are connected by the bar 16, to which the operating-bar 17 is connected, said bar passing beneath the grate 1 and extending through the front wall of the furnace, so as to be readily accessible when it is required to rock the fuel-bars to clear the grate-section of ashes and the like. The bars 9 have pendent portions 7 which are connected by the rod 19,- to which the operating-bar 8 is attached, said bar extending beneath the grate 1 and through the front wall of the furnace to be conveniently grasped for tilting the grate-section 3 to clear it of ashes, clinkers, and the like.

A furnace-grate embodying the invention may be kept free from ashes, clinkers, and.

cleaning the grate-section and materially assist in getting rid of foreign matter.

Having thus described the invention, what is claimed as new is- In a furnace, the combination of a grate, a frame arranged in the rear of the grate and comprising side bars and a transverse bar, a second frame arranged at a downward and rearward inclination and pivoted between its ends to the side bars of the first-mentioned frame and having hooks at its upper end to engage over the said transverse bar and having notches in the upper edges of its side bars, fuel-bars journaled in said notches, plates secured to the side bars and closing the notches therein, means for rocking the fuel-bars and other means for tilting the pivoted frame, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

FREDERICK GIR'IANNER. SOLOMON L. SIMPSON.

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